Seal-lock



,(Mdel') L. A. BROWN.

SEAL LOCK.

Nuo. 388,258. Patented Aug. 21, 1888.

@ritten rames LEIVIS A. BROWN, OF ST. LOUIS, MISSOURI.

SEAL-LOCK.

SPECIFICATION ormng part of Letters Patent No. 388,258, dated August 21, 1888.

Application filed April (i, 1858. Serial No. 269,883.

To @ZZ wwm/ Z' may concern.'

Beit known that I, LEWIS A. BROWN, of St. Louis, Missouri, have made a new and useful Improvement in Seal-Locks, ot' which the following is a full, clear, and exact description.

I have heretofore, March 9, 1888, Serial No. 266,725, filed an application for Letters Patent for an improvementin seal-locks, wherein that part of the padlock or other lock or seal which needs to be reached to effect the unlocking of the lockbar, bolt, &c., is adapted to be shielded by a part which in use is slipped or passed or moved in the lock or seal so as to come over the part in questiomand in that position to be locked, and thus for the time being prevent access to that part. in turn is guarded by a seal, such as a glass plate, and in such manner as to necessitate the breaking of the frangible plate in order to reach the shield-fastening. Thus thepresence of the plate unbroken is evidence that the lock has not been opened.

rIhe present improved construction is related to the one referred to. In said original construction the padlock-bow, or whatever iockbar is used, is adapted to be locked by means of a part which is separate from the shield, and which, when the shield is in position, is covered bythe shield, and in order to reach such part the shield must first be removed. In the present construction there is no such separate part, and the padlock-bow, 83e., is adapted to be connected directly with the so-called shield, substantially as hereinafter specified and claimed and illustrated in the drawings hereto annexed and made part of this specitication, in which- Figure lis a front elevation of a padlock having theimprovement embodied therein,the bow being raised, the seal being omitted; Fig. 2, a front elevation ofthe padlock locked; Fig. 3, an edge elevation ot' the padlock, the bow being opened; Fig. 4, a section on the line 4 4 of Fig. 2; Fig. 5, a View in perspective of the locking-plate; Fig. 6, a horizontal section on the line 6 6 of Fig. 2, and Fig. 7 is a detail View of the engaging end of the bow.

The sameletters of reference denote the same parts.

A represents the padlock used to illustrate The shieldy (Model.)

the application of the improvement. Its construction is of the ordinary kind otherwise than as modified by the embodiment therein of the improvement.

O represents the part corresponding to what is in the original construction termed the shield, but which is now styled the locking-plate. It is adapted to be held and moved upward and downward in the padlockcase and to be fastened in its up position, substantially as is the'shield in the original constructionthat is, the plate O is perforated or recessed at c, and when the locking-plate is moved to position to effect the locking of the padlock-bow a a spring-catch, D, behind the locking-plate springs forward and engages in the perforation c, and thereby locks the plate O in position. The locking-plate O and the padlock-bow a are relatively so constructed as to cause them, when the locking-plate is in its up position and the bow is in its closed position, as in Fig. 2, to become interlocked, and so that the bow cannot be disengaged to be opened without first withdrawing the lockingplate into its down position. To this end and as the most desirable construction the lockingplate is provided with a projection, c', and the bow a is provided with a projection, a', and when the locking-plate is raised and the bow closed the bow projection comes behind (i. e., to the left, as shown in Fig. 2) the lockingplate projectiomand the bow is thus prevented from turning on its pivot a?.

E represents the seal employed to guard the locking-plate. It is adapted to coact with the locking-plate and to prevent access to the spring-catch D in manner similar to that in which the seal is made to co-operate with the shield in the original construction-that is, to unlock the padlock the seal must be removed, which can be done only by breakingit. Then the spring-catch D is pressed backward, and thereby detached from the locked plate. The locking-plate, now being free, is drawn downward into the position of Fig. l, which movement of the locking-plate causes the projection c' to be withdrawn from in front of the bow projection a and the bow t0 be free to be turned on its pivot.

The present improvement can be applied to many other forms of locks-to trunk-locks, for

IOO

I claim- The combination of the lock-case, the bow having the projection a', thelockingplate hav- 15 inge,` the perforation c and the projection c,and the seal and the spring-catch D, substantially as described.

Witnessv my hand this 28th day of March,

example. In such locks it is desirable for the locking-bolt (the part corresponding tothe l padlock-bow in the present illustration) to be moved in a right line, say upward and downward. In such a case the seal-lock may be contrived to have the locking-plate moveto the right and left, and thereby engage with and i be disengaged from aproj ection upon the lock- 1888. ing-boltcorrespondingtothebowprojection a. LEWIS A. BROWN.

The projection c in the present illustration Witnesses:

is shown upon the back side of the locking plate.

C. D. MOODY, JAS. W. ALLEN. 

